News of a 15-year-old Genesee girl's disappearance has spread rapidly throughout her community and school.

Jacob Cavaiani is in the marching band with Kathryn Stalbaum at Kettle Moraine High School and also ran alongside her for the school's cross-country team.

He said she always had a bright smile across her face.

"She's funny and kind and positive and always laughing with her friends through the hallways," Cavaiani said.

His father, Jay Cavaiani, is concerned about what may have happened.

"I have three children all in Kettle Morraine School District and my daughter is 13, so I just really felt a tug right away like wow, I can't believe this is happening so close to home," Jay Cavaiani said.

He is also a pastor at a local church and is encouraging the community to attend a vigil for Stalbaum on Sunday to pray she returns home safely.

"I felt compelled to do something, not sure what but came up with some sort of prayer vigil," Jay Cavaiani said.

Other students at Kettle Moraine High School, told WISN 12 News reporter Mike Anderson that it was not school as usual Thursday.

"Everyone is like, shocked, because it's like, someone in our community is missing and it's just crazy to think. Like everyone is just shocked," sophomore Mikayla Sawejka said.